PRECISE METHODS FOR ESTIMATING PAVEMENT CLASSIFICATION NUMBER

PRECISE METHODS FOR ESTIMATING PAVEMENT CLASSIFICATION NUMBER - Printable Version

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PRECISE METHODS FOR ESTIMATING PAVEMENT CLASSIFICATION NUMBER - hazus - 07-28-2011

This document presents methods that can be used by an airport authority to determine Pavement Classification Numbers for both flexible and rigid pavements. The techniques that are recommended are based on the ICAO ACN/PCN method as published in Annex 14. This includes simplified procedures based on using aircraft, as well as a more complex technical analysis that embody pavement characteristics and the traffic mix. The comprehensive methods described in this document are presented in a step-by-step approach, and many examples are included to help explain the processes. Discussion of aircraft loading in excess of the published PCN is based on an extension of the basic ICAO ACN/PCN method of pavement overloading. These procedures will allow the airport authority to assess the impact of individual aircraft overloads, as well as continuous overloading by a fleet of aircraft. Methods are presented that can be used to convert common rating systems such as FAA, LCN, and LCG to a PCN. A complete description of the ACN/PCN procedure as presented in the ICAO Annex 14 is provided.

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